# Error during Store and Download on WAGO\_750-831 BACnet controller **URL:** \ **Category:** CODESYS\ **Tags:** codesys\ **Created:** [August 1, 2026, 2:02pm UTC](https://www.wago.community/t/erreur-lors-du-store-and-download-sur-controleur-wago-750-831-bacnet/2836 "2026-08-01T14:02:43Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Albert](https://avatars.discourse-cdn.com/v4/letter/a/48db29/32.png) [@Albert](https://www.wago.community/u/Albert)\ **Post date:** [August 1, 2026, 2:02pm UTC](https://www.wago.community/t/erreur-lors-du-store-and-download-sur-controleur-wago-750-831-bacnet/2836/1 "2026-08-01T14:02:43Z")
Hello, I’m having an issue with BACnet objects. Previously, all analog values were set to zero. I manually added the points in the Client Mappings using the WAGO BACnet Configurator. The next day, after continuing modifications on the .wbc backup file and launching “Store and Download,” I received an error message, and the WAGO PLC displays a flashing code 6-10. Please note that the project in WAGO-I/O-PRO and the SYM\_XML file correspond correctly. CoDeSys Version 2.3.9.68 WAGO BACnet Configurator Version 3.4.0.0 Could you please provide a solution to this problem to prevent the error from occurring when launching “Store and Download”? Thank you. Best regards, ---
**Author:** ![WagoIcard](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/wagoicard/32/1508_2.png) [@WagoIcard](https://www.wago.community/u/WagoIcard)\ **Post date:** [August 3, 2026, 12:33am UTC](https://www.wago.community/t/erreur-lors-du-store-and-download-sur-controleur-wago-750-831-bacnet/2836/2 "2026-08-03T00:33:18Z")
Hello, In codesys have you written the Boot project ? ![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/2X/b/bef6c400749b2b40dd001641903e01afff246e07.png) After a Store and Download the 831 will reboot and if you don’t have done the Boot project you will have the error 6-10